Apparatus for treating rubber articles



June 10, 1930. K J, WASELUK 1,762,846

APPARATUS FOR TREATING RUBBER ARTICLES' V FiledhApril 2, 1927 INVNTOR fdco Wwe/ak BY 4l r ,J1 A ORNEY Patented June 10, 1930 UNrrazD vSTATES v JACOB WAsELUK, E DETROIT, MICHIGAN, AssIGfNOR To MORGAN ANnfvvRIeEIT, OF.

r DETROIT, MICHIGAN, A CORPORATION on MICHIGAN APPARATUS FOR TREATINC; `RUBBER ARTICLES f Application filed April 2,

This invention relates to av device for supporting annular articles while buHing the surface thereof. More particularly it relates to a device for supporting Yand revolving a curing bag while abrading its surface.

It is customary to recondition the curing bags used in vulcanizing certain types of pneumatic tires by builing Cif theoutside surface of the same after which the bags are recovered for further use. A convenient method of supporting the bag while buing the same has been to loosely mount the bag upon a rotatable wheel, securing it merely by engagement of the valve stem with a hole in the periphery of the wheel. The wheel is rotated and a buliing wheel is applied to the surface of the curing bag. During this operation, the curing bag tends to creep on the rotating Wheel and to bulge adjacent the valve stem. When the buffer strikes the bulged portion of the curing bag, it gouges into the bag.

It is an object of this invention to provide a mounting for a` vcuring bag whereby bulging- 2,5 Vduring the bufng operation will be obviated. It isa further object to provide a mountingl for al curing bag which will permit of rapid assembly and dis-assembly of the bag upon the mounting. Other objects will be appar- 3o ent from the specification and from the ac- 'i companying drawings in which latter:

Fig. 1 is a. front elevation of a rotatable frame for supporting the Atype of curing bag used in curing a straight side tire;

- Fig. 2l is a transverse section upon the line .i 2 2 of Fig. 1 showing` a curing bag positioned upon the frame;

Fig. 3 is a front elevation of a rotatablev frame for supporting a curing bag used vin 4o vulcanizing a c'lincherftire; and

Fig. 4 is a transverse section along the line` 1l-4 of Fig. 3 with a curing bag in position upon the frame.

Referring particularly to Figs. 1v and 2, the ,45V frame comprises a-hub 1r which isadapted to be keyed or otherwise secured upon a rotary shaft. Spokes'Q lextend radially from' the hub to a flanged rim 13; An a d]ust1ng ring 4 to accommodate curing bags of dif- 50, ferent profiles or cross sections is `'adapted 19'27 seriarN'o. 180,507:

to Ibe secured upon the'outer periphery of the rim 3`by a .screw threaded connection. yA- secondary hub 5 is carried by, thespokes 2 intermediate' the hub l1 and rim'3 A'and one' side thereof carries thek annular flangejf. ,A disc 7 is ladapted tov be securedby boltsor otherwise to one face of the secondary-'hub' Y 5 abutting againstthe flange 6. The` outer; edge ofthe disc 7 forms anannula-r vsupport for the rim surface of a curingbag 8 at one. side of thevalvestem 9. vUponthe' other side of thel valve stem, the curingbag is supported by'` the adjusting ring /1,`th'e'poi sition of whichrwith respect to the disc 7 canbe `varied ,by means ofthe screw threads. The disc 7 is spaced from the rim 3 a suitable dis-k tance to permit of freedom ofmovement ofthev Valve' stem therebetween.l Meansv for bufing the curing-bag-S arehad in a bufling wheel 10 which is suitably mount-2 ed for rotation upon a shaft 11 which is driven by a-motor 12.A The motor 12.is, suit-- ablymounted by `any convenient means (not shown) for movementgin an arc'abouttheY curing bag shown bythe dotand dashline y,In Figs. 3 and ZlgthereY is shownia modifica-- tion ofthe supporting' frame whereby the same is adapted "foloarrying a curing bagl used in curingthe clincher type tire.4 In'this. modification. thedeyice comprises a hub 13 from which spokes 14 radially `project, and'l Y terminate in an annular rim l15, the 'upper surface of which extends diagonally from the plane ofthe spokes.k The base ofthe annu-.gigsy larrim 15` isA adapted; .to be engaged by the rim surface; ofI a clinchertype air bag vandthe. upper surface `of*the/rim15, servesV asa; supe,

Aportv for theside Vwall'of the curing bag." lThe rim functions to limit'lateral axial movement- `carried bythe spokes`14 intermediate the..

hub13 and rim 15 anda flange 17 projects lat# v the valve stem 19 of the curing bag 2() can be clearance channel for thevalve stem, thereby positioned therein with freedom of movepermitting circumferential creeping of the Vment, but sufficiently close together for the bag on said frame.

rim surface of the curing bag to rest upon the outer periphery thereof. Y

In the operation of the machine, a curing bag is positioned upon the frame either by inserting the valve stem through a slot in the retaining disc or by assembling the valve 10 stem in the annular groove by vertical movement thereof. The siuaporting frame Withl the curing bag thereon is rotated. The buffing Wheel rotating in the opposite direction to the curing bag, is applied to the surface thereof and is gradually moved peripherally about the curing bag as indicated by the dot and dash line Fig. 2. `The surface of Slightly more than half Vof the curing bag is bued by this operation, after which the buff- ;Q; ing Wheel l0 is removed. The curing bag is then reversed upon the supporting frame and' the operation of bung the remaining portion of the curing bag is effected.

lVhile the invention has been particularly 25,l described as applied toa device for supporting a curing bag during the operation of bul?- ing the surface thereof, it Will be apparent thatv it Vcan be utilized for supporting various other annular articles such as an assembled 30, tire and tube, and can be used for other processes than that of buiiingthe surface of the supported article.

Having thus described-my invention, What I claim and desire to protect by Letters Patliftl ent is g l. A device for supporting a curing bag comprisingVv an annular frame mountedA Vfor rotary movement, and means secured thereto Vadapted to cooperate With the frame to 403' support a curing bag, said means and frame being spaced to provide an annular groove to receive the valve stem of the curing bag. VA device for supporting a curing bag comprising an annular frame adapted to re- ,15Jl ceive the curing bag and limit axial movement of the saine in one direction, said frame being mounted for rotation and provided With an annular groove in its periphery to receive the valve stem of the curing bag.

'3. A'device for supporting a curing bag comprisinga` frame substantially annular inv form, and means cooperating With the frame to support vav curing bag provided With a valve stem, said frame( being arranged to clear the valve stem', whereby said curing bag is .permitted to` creep circumferentially of saidframe. y

4. A device -for supporting Ea curing bag having a valve stem comprising a substantial- B0.; ly annular frame adaptedto receive the bag and limit axial movement of the same in one direction, and van adjusting ring movable relative tosaid frame and cooperating therewith to support the bag,`said frame and the 05 ring being yarranged to define Van annular Signed at Detroit, county of Wayne, State of lvlichigan, this 26th day of March, 1927.

Y JACOB WASELUK. 

